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scummvm/engines/scumm/resource.cpp

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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2006 The ScummVM project
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "common/stdafx.h"
#include "common/str.h"
#include "scumm/charset.h"
#include "scumm/dialogs.h"
#include "scumm/file.h"
#include "scumm/imuse/imuse.h"
#include "scumm/imuse_digi/dimuse.h"
#include "scumm/intern.h"
#ifndef DISABLE_HE
#include "scumm/he/intern_he.h"
#endif
#include "scumm/object.h"
#include "scumm/resource.h"
#include "scumm/scumm.h"
#include "scumm/sound.h"
#include "scumm/util.h"
#include "scumm/verbs.h"
namespace Scumm {
enum {
RF_LOCK = 0x80,
RF_USAGE = 0x7F,
RF_USAGE_MAX = RF_USAGE,
RS_MODIFIED = 0x10
};
extern const char *resTypeFromId(int id);
static uint16 newTag2Old(uint32 newTag);
static const byte *findResourceSmall(uint32 tag, const byte *searchin);
#ifndef DISABLE_HE
static bool checkTryMedia(BaseScummFile *handle);
#endif
/* Open a room */
void ScummEngine::openRoom(const int room) {
bool result;
byte encByte = 0;
debugC(DEBUG_GENERAL, "openRoom(%d)", room);
assert(room >= 0);
/* Don't load the same room again */
if (_lastLoadedRoom == room)
return;
_lastLoadedRoom = room;
/* Room -1 means close file */
if (room == -1) {
deleteRoomOffsets();
_fileHandle->close();
return;
}
// Load the disk numer / room offs (special case for room 0 exists because
// room 0 contains the data which is used to create the roomno / roomoffs
// tables -- hence obviously we mustn't use those when loading room 0.
const uint32 diskNumber = room ? _res->roomno[rtRoom][room] : 0;
const uint32 room_offs = room ? _res->roomoffs[rtRoom][room] : 0;
// FIXME: Since room_offs is const, clearly the following loop either
// is never entered, or loops forever (if it wasn't for the return/error
// statements in it, that is). -> This should be cleaned up!
// Maybe we should re-enabled the looping properly, to deal with disc
// changes in COMI ?
while (room_offs != 0xFFFFFFFF) {
if (room_offs != 0 && room != 0 && _game.heversion < 98) {
_fileOffset = _res->roomoffs[rtRoom][room];
return;
}
Common::String filename(generateFilename(room));
// Determine the encryption, if any.
if (_game.features & GF_USE_KEY) {
if (_game.version <= 3)
encByte = 0xFF;
else if ((_game.version == 4) && (room == 0 || room >= 900))
encByte = 0;
else
encByte = 0x69;
} else
encByte = 0;
if (room > 0 && (_game.version == 8))
VAR(VAR_CURRENTDISK) = diskNumber;
// Try to open the file
result = openResourceFile(filename, encByte);
if (result) {
if (room == 0)
return;
deleteRoomOffsets();
readRoomsOffsets();
_fileOffset = _res->roomoffs[rtRoom][room];
if (_fileOffset != 8)
return;
error("Room %d not in %s", room, filename.c_str());
return;
}
askForDisk(filename.c_str(), diskNumber);
}
do {
char buf[16];
snprintf(buf, sizeof(buf), "%.3d.lfl", room);
encByte = 0;
if (openResourceFile(buf, encByte))
break;
askForDisk(buf, diskNumber);
} while (1);
deleteRoomOffsets();
_fileOffset = 0; // start of file
}
void ScummEngine::closeRoom() {
if (_lastLoadedRoom != -1) {
_lastLoadedRoom = -1;
deleteRoomOffsets();
_fileHandle->close();
}
}
/** Delete the currently loaded room offsets. */
void ScummEngine::deleteRoomOffsets() {
for (int i = 0; i < _numRooms; i++) {
if (_res->roomoffs[rtRoom][i] != 0xFFFFFFFF)
_res->roomoffs[rtRoom][i] = 0;
}
}
/** Read room offsets */
void ScummEngine::readRoomsOffsets() {
int num, room;
debug(9, "readRoomOffsets()");
if (_game.features & GF_SMALL_HEADER) {
_fileHandle->seek(12, SEEK_SET); // Directly searching for the room offset block would be more generic...
} else {
_fileHandle->seek(16, SEEK_SET);
}
num = _fileHandle->readByte();
while (num--) {
room = _fileHandle->readByte();
if (_res->roomoffs[rtRoom][room] != 0xFFFFFFFF) {
_res->roomoffs[rtRoom][room] = _fileHandle->readUint32LE();
} else {
_fileHandle->readUint32LE();
}
}
}
bool ScummEngine::openFile(BaseScummFile &file, const Common::String &filename, bool resourceFile) {
bool result = false;
if (!_containerFile.empty()) {
file.close();
file.open(_containerFile);
assert(file.isOpen());
result = file.openSubFile(filename);
}
if (!result) {
file.close();
result = file.open(filename);
}
return result;
}
bool ScummEngine::openResourceFile(const Common::String &filename, byte encByte) {
debugC(DEBUG_GENERAL, "openResourceFile(%s)", filename.c_str());
if (openFile(*_fileHandle, filename, true)) {
_fileHandle->setEnc(encByte);
return true;
}
return false;
}
void ScummEngine::askForDisk(const char *filename, int disknum) {
char buf[128];
if (_game.version == 8) {
#ifndef DISABLE_SCUMM_7_8
char result;
_imuseDigital->stopAllSounds();
#ifdef MACOSX
sprintf(buf, "Cannot find file: '%s'\nPlease insert disc %d.\nPress OK to retry, Quit to exit", filename, disknum);
#else
sprintf(buf, "Cannot find file: '%s'\nInsert disc %d into drive %s\nPress OK to retry, Quit to exit", filename, disknum, _gameDataPath.c_str());
#endif
result = displayMessage("Quit", buf);
if (!result) {
error("Cannot find file: '%s'", filename);
}
#endif
} else {
sprintf(buf, "Cannot find file: '%s'", filename);
InfoDialog dialog(this, (char*)buf);
runDialog(dialog);
error("Cannot find file: '%s'", filename);
}
}
void ScummEngine::readIndexFile() {
uint32 blocktype, itemsize;
int numblock = 0;
debugC(DEBUG_GENERAL, "readIndexFile()");
closeRoom();
openRoom(0);
if (_game.version <= 5) {
// Figure out the sizes of various resources
while (!_fileHandle->eof()) {
blocktype = _fileHandle->readUint32BE();
itemsize = _fileHandle->readUint32BE();
if (_fileHandle->ioFailed())
break;
switch (blocktype) {
case MKID_BE('DOBJ'):
_numGlobalObjects = _fileHandle->readUint16LE();
itemsize -= 2;
break;
case MKID_BE('DROO'):
_numRooms = _fileHandle->readUint16LE();
itemsize -= 2;
break;
case MKID_BE('DSCR'):
_numScripts = _fileHandle->readUint16LE();
itemsize -= 2;
break;
case MKID_BE('DCOS'):
_numCostumes = _fileHandle->readUint16LE();
itemsize -= 2;
break;
case MKID_BE('DSOU'):
_numSounds = _fileHandle->readUint16LE();
itemsize -= 2;
break;
}
_fileHandle->seek(itemsize - 8, SEEK_CUR);
}
_fileHandle->clearIOFailed();
_fileHandle->seek(0, SEEK_SET);
}
#ifndef DISABLE_HE
if (checkTryMedia(_fileHandle)) {
displayMessage(NULL, "You're trying to run game encrypted by ActiveMark. This is not supported.");
_quit = true;
return;
}
#endif
while (true) {
blocktype = _fileHandle->readUint32BE();
itemsize = _fileHandle->readUint32BE();
if (_fileHandle->ioFailed())
break;
numblock++;
readIndexBlock(blocktype, itemsize);
}
// if (numblock!=9)
// error("Not enough blocks read from directory");
closeRoom();
}
#ifndef DISABLE_HE
#define TRYMEDIA_MARK_LEN 6
bool checkTryMedia(BaseScummFile *handle) {
byte buf[TRYMEDIA_MARK_LEN];
bool matched = true;
const byte magic[2][TRYMEDIA_MARK_LEN] =
{{ 0x00, 'T', 'M', 'S', 'A', 'M' },
{ 'i', '=', '$', ':', '(', '$' }}; // Same but 0x69 xored
handle->read(buf, TRYMEDIA_MARK_LEN);
for (int i = 0; i < 2; i++) {
matched = true;
for (int j = 0; j < TRYMEDIA_MARK_LEN; j++)
if (buf[j] != magic[i][j]) {
matched = false;
break;
}
if (matched)
break;
}
if (matched)
return true;
handle->seek(0, SEEK_SET);
return false;
}
#endif
#ifndef DISABLE_SCUMM_7_8
void ScummEngine_v7::readIndexBlock(uint32 blocktype, uint32 itemsize) {
int num;
char *ptr;
switch (blocktype) {
case MKID_BE('ANAM'): // Used by: The Dig, FT
debug(9, "found ANAM block, reading audio names");
num = _fileHandle->readUint16LE();
ptr = (char*)malloc(num * 9);
_fileHandle->read(ptr, num * 9);
_imuseDigital->setAudioNames(num, ptr);
break;
case MKID_BE('DRSC'): // Used by: COMI
readResTypeList(rtRoomScripts);
break;
default:
ScummEngine::readIndexBlock(blocktype, itemsize);
}
}
#endif
#ifndef DISABLE_HE
void ScummEngine_v70he::readIndexBlock(uint32 blocktype, uint32 itemsize) {
int i;
switch (blocktype) {
case MKID_BE('DIRI'):
readResTypeList(rtRoomImage);
break;
case MKID_BE('DIRM'):
readResTypeList(rtImage);
break;
case MKID_BE('DIRT'):
readResTypeList(rtTalkie);
break;
case MKID_BE('DLFL'):
i = _fileHandle->readUint16LE();
_fileHandle->seek(-2, SEEK_CUR);
_heV7RoomOffsets = (byte *)calloc(2 + (i * 4), 1);
_fileHandle->read(_heV7RoomOffsets, (2 + (i * 4)) );
break;
case MKID_BE('DISK'):
i = _fileHandle->readUint16LE();
_heV7DiskOffsets = (byte *)calloc(i, 1);
_fileHandle->read(_heV7DiskOffsets, i);
break;
case MKID_BE('SVER'):
// Index version number
_fileHandle->seek(itemsize - 8, SEEK_CUR);
break;
case MKID_BE('INIB'):
_fileHandle->seek(itemsize - 8, SEEK_CUR);
debug(2, "INIB index block not yet handled, skipping");
break;
default:
ScummEngine::readIndexBlock(blocktype, itemsize);
}
}
#endif
void ScummEngine::readIndexBlock(uint32 blocktype, uint32 itemsize) {
int i;
switch (blocktype) {
case MKID_BE('DCHR'):
case MKID_BE('DIRF'):
readResTypeList(rtCharset);
break;
case MKID_BE('DOBJ'):
debug(9, "found DOBJ block, reading object table");
readGlobalObjects();
break;
case MKID_BE('RNAM'):
// Names of rooms. Maybe we should put them into a table, for use by the debugger?
if (_game.heversion >= 80) {
for (int room; (room = _fileHandle->readUint16LE()); ) {
char buf[100];
i = 0;
for (byte s; (s = _fileHandle->readByte()) && i < ARRAYSIZE(buf) - 1; ) {
buf[i++] = s;
}
buf[i] = 0;
debug(5, "Room %d: '%s'", room, buf);
}
} else {
for (int room; (room = _fileHandle->readByte()); ) {
char buf[10];
_fileHandle->read(buf, 9);
buf[9] = 0;
for (i = 0; i < 9; i++)
buf[i] ^= 0xFF;
debug(5, "Room %d: '%s'", room, buf);
}
}
break;
case MKID_BE('DROO'):
case MKID_BE('DIRR'):
readResTypeList(rtRoom);
break;
case MKID_BE('DSCR'):
case MKID_BE('DIRS'):
readResTypeList(rtScript);
break;
case MKID_BE('DCOS'):
case MKID_BE('DIRC'):
readResTypeList(rtCostume);
break;
case MKID_BE('MAXS'):
readMAXS(itemsize);
allocateArrays();
break;
case MKID_BE('DIRN'):
case MKID_BE('DSOU'):
readResTypeList(rtSound);
break;
case MKID_BE('AARY'):
readArrayFromIndexFile();
break;
default:
error("Bad ID %04X('%s') found in index file directory!", blocktype,
tag2str(blocktype));
}
}
void ScummEngine::readArrayFromIndexFile() {
error("readArrayFromIndexFile() not supported in pre-V6 games");
}
void ScummEngine::readResTypeList(int id) {
int num;
int i;
debug(9, "readResTypeList(%s)", resTypeFromId(id));
if (_game.version == 8)
num = _fileHandle->readUint32LE();
else
num = _fileHandle->readUint16LE();
if (num != _res->num[id]) {
error("Invalid number of %ss (%d) in directory", resTypeFromId(id), num);
}
for (i = 0; i < num; i++) {
_res->roomno[id][i] = _fileHandle->readByte();
}
for (i = 0; i < num; i++) {
_res->roomoffs[id][i] = _fileHandle->readUint32LE();
if (id == rtRoom && _game.heversion >= 70)
_heV7RoomIntOffsets[i] = _res->roomoffs[id][i];
}
if (_game.heversion >= 70) {
for (i = 0; i < num; i++) {
_res->globsize[id][i] = _fileHandle->readUint32LE();
}
}
}
void ResourceManager::allocResTypeData(int id, uint32 tag, int num_, const char *name_, int mode_) {
debug(9, "allocResTypeData(%s/%s,%s,%d,%d)", resTypeFromId(id), name_, tag2str(TO_BE_32(tag)), num_, mode_);
assert(id >= 0 && id < (int)(ARRAYSIZE(this->mode)));
if (num_ >= 8000)
error("Too many %ss (%d) in directory", name_, num_);
mode[id] = mode_;
num[id] = num_;
tags[id] = tag;
name[id] = name_;
address[id] = (byte **)calloc(num_, sizeof(void *));
flags[id] = (byte *)calloc(num_, sizeof(byte));
status[id] = (byte *)calloc(num_, sizeof(byte));
if (mode_) {
roomno[id] = (byte *)calloc(num_, sizeof(byte));
roomoffs[id] = (uint32 *)calloc(num_, sizeof(uint32));
}
if (_vm->_game.heversion >= 70) {
globsize[id] = (uint32 *)calloc(num_, sizeof(uint32));
}
}
void ScummEngine::loadCharset(int no) {
int i;
byte *ptr;
debugC(DEBUG_GENERAL, "loadCharset(%d)", no);
/* FIXME - hack around crash in Indy4 (occurs if you try to load after dieing) */
if (_game.id == GID_INDY4 && no == 0)
no = 1;
/* for Humongous catalogs */
if (_game.heversion >= 70 && _numCharsets == 1) {
debug(0, "Not loading charset as it doesn't seem to exist?");
return;
}
assert(no < (int)sizeof(_charsetData) / 16);
assertRange(1, no, _numCharsets - 1, "charset");
ptr = getResourceAddress(rtCharset, no);
for (i = 0; i < 15; i++) {
_charsetData[no][i + 1] = ptr[i + 14];
}
}
void ScummEngine::nukeCharset(int i) {
assertRange(1, i, _numCharsets - 1, "charset");
_res->nukeResource(rtCharset, i);
}
void ScummEngine::ensureResourceLoaded(int type, int i) {
void *addr = NULL;
debugC(DEBUG_RESOURCE, "ensureResourceLoaded(%s,%d)", resTypeFromId(type), i);
if ((type == rtRoom) && i > 0x7F && _game.version < 7 && _game.heversion <= 71) {
i = _resourceMapper[i & 0x7F];
}
// FIXME - TODO: This check used to be "i==0". However, that causes
// problems when using this function to ensure charset 0 is loaded.
// This is done for many games, e.g. Zak256 or Indy3 (EGA and VGA).
// For now we restrict the check to anything which is not a charset.
// Question: Why was this check like that in the first place?
// Answer: costumes with an index of zero in the newer games at least.
// TODO: determine why the heck anything would try to load a costume
// with id 0. Is that "normal", or is it caused by yet another bug in
// our code base? After all we also have to add special cases for many
// of our script opcodes that check for the (invalid) actor 0... so
// maybe both issues are related...
if (type != rtCharset && i == 0)
return;
if (i <= _res->num[type])
addr = _res->address[type][i];
if (addr)
return;
loadResource(type, i);
if (_game.version == 5 && type == rtRoom && i == _roomResource)
VAR(VAR_ROOM_FLAG) = 1;
}
int ScummEngine::loadResource(int type, int idx) {
int roomNr;
uint32 fileOffs;
uint32 size, tag;
debugC(DEBUG_RESOURCE, "loadResource(%s,%d)", resTypeFromId(type), idx);
if (type == rtCharset && (_game.features & GF_SMALL_HEADER)) {
loadCharset(idx);
return (1);
}
roomNr = getResourceRoomNr(type, idx);
if (idx >= _res->num[type])
error("%s %d undefined %d %d", _res->name[type], idx, _res->num[type], roomNr);
if (roomNr == 0)
roomNr = _roomResource;
if (type == rtRoom) {
if (_game.version == 8)
fileOffs = 8;
else if (_game.heversion >= 70)
fileOffs = _heV7RoomIntOffsets[idx];
else
fileOffs = 0;
} else {
fileOffs = _res->roomoffs[type][idx];
if (fileOffs == 0xFFFFFFFF)
return 0;
}
openRoom(roomNr);
_fileHandle->seek(fileOffs + _fileOffset, SEEK_SET);
if (_game.features & GF_OLD_BUNDLE) {
if ((_game.version == 3) && !(_game.platform == Common::kPlatformAmiga) && (type == rtSound)) {
return readSoundResourceSmallHeader(type, idx);
} else {
size = _fileHandle->readUint16LE();
_fileHandle->seek(-2, SEEK_CUR);
}
} else if (_game.features & GF_SMALL_HEADER) {
if (_game.version == 4)
_fileHandle->seek(8, SEEK_CUR);
size = _fileHandle->readUint32LE();
tag = _fileHandle->readUint16LE();
_fileHandle->seek(-6, SEEK_CUR);
if ((type == rtSound) && !(_game.platform == Common::kPlatformAmiga) && !(_game.platform == Common::kPlatformFMTowns)) {
return readSoundResourceSmallHeader(type, idx);
}
} else {
if (type == rtSound) {
return readSoundResource(type, idx);
}
tag = _fileHandle->readUint32BE();
if (tag != _res->tags[type] && _game.heversion < 70) {
error("%s %d not in room %d at %d+%d in file %s",
_res->name[type], idx, roomNr,
_fileOffset, fileOffs, _fileHandle->name());
}
size = _fileHandle->readUint32BE();
_fileHandle->seek(-8, SEEK_CUR);
}
_fileHandle->read(_res->createResource(type, idx, size), size);
// dump the resource if requested
if (_dumpScripts && type == rtScript) {
dumpResource("script-", idx, getResourceAddress(rtScript, idx));
}
if (!_fileHandle->ioFailed()) {
return 1;
}
_res->nukeResource(type, idx);
error("Cannot read resource");
}
int ScummEngine::getResourceRoomNr(int type, int idx) {
if (type == rtRoom && _game.heversion < 70)
return idx;
return _res->roomno[type][idx];
}
int ScummEngine::getResourceSize(int type, int idx) {
byte *ptr = getResourceAddress(type, idx);
assert(ptr);
MemBlkHeader *hdr = (MemBlkHeader *)(ptr - sizeof(MemBlkHeader));
return hdr->size;
}
byte *ScummEngine::getResourceAddress(int type, int idx) {
byte *ptr;
if (_game.heversion >= 80 && type == rtString)
idx &= ~0x33539000;
if (!_res->validateResource("getResourceAddress", type, idx))
return NULL;
if (!_res->address[type]) {
debugC(DEBUG_RESOURCE, "getResourceAddress(%s,%d), _res->address[type] == NULL", resTypeFromId(type), idx);
return NULL;
}
if (_res->mode[type] && !_res->address[type][idx]) {
ensureResourceLoaded(type, idx);
}
if (!(ptr = (byte *)_res->address[type][idx])) {
debugC(DEBUG_RESOURCE, "getResourceAddress(%s,%d) == NULL", resTypeFromId(type), idx);
return NULL;
}
_res->setResourceCounter(type, idx, 1);
debugC(DEBUG_RESOURCE, "getResourceAddress(%s,%d) == %p", resTypeFromId(type), idx, ptr + sizeof(MemBlkHeader));
return ptr + sizeof(MemBlkHeader);
}
byte *ScummEngine::getStringAddress(int i) {
byte *addr = getResourceAddress(rtString, i);
return addr;
}
byte *ScummEngine_v6::getStringAddress(int i) {
byte *addr = getResourceAddress(rtString, i);
if (addr == NULL)
return NULL;
// Skip over the ArrayHeader
return addr + 6;
}
byte *ScummEngine::getStringAddressVar(int i) {
return getStringAddress(_scummVars[i]);
}
void ResourceManager::increaseExpireCounter() {
if (!(++_expireCounter)) {
increaseResourceCounter();
}
}
void ResourceManager::increaseResourceCounter() {
int i, j;
byte counter;
for (i = rtFirst; i <= rtLast; i++) {
for (j = num[i]; --j >= 0;) {
counter = flags[i][j] & RF_USAGE;
if (counter && counter < RF_USAGE_MAX) {
setResourceCounter(i, j, counter + 1);
}
}
}
}
void ResourceManager::setResourceCounter(int type, int idx, byte flag) {
flags[type][idx] &= ~RF_USAGE;
flags[type][idx] |= flag;
}
/* 2 bytes safety area to make "precaching" of bytes in the gdi drawer easier */
#define SAFETY_AREA 2
byte *ResourceManager::createResource(int type, int idx, uint32 size) {
byte *ptr;
debugC(DEBUG_RESOURCE, "_res->createResource(%s,%d,%d)", resTypeFromId(type), idx, size);
if (!validateResource("allocating", type, idx))
return NULL;
if (_vm->_game.version <= 2) {
// Nuking and reloading a resource can be harmful in some
// cases. For instance, Zak tries to reload the intro music
// while it's playing. See bug #1253171.
if (address[type][idx] && (type == rtSound || type == rtScript || type == rtCostume))
return address[type][idx] + sizeof(MemBlkHeader);
}
nukeResource(type, idx);
expireResources(size);
ptr = (byte *)calloc(size + sizeof(MemBlkHeader) + SAFETY_AREA, 1);
if (ptr == NULL) {
error("Out of memory while allocating %d", size);
}
_allocatedSize += size;
address[type][idx] = ptr;
((MemBlkHeader *)ptr)->size = size;
setResourceCounter(type, idx, 1);
return ptr + sizeof(MemBlkHeader); /* skip header */
}
ResourceManager::ResourceManager(ScummEngine *vm) {
memset(this, 0, sizeof(ResourceManager));
_vm = vm;
// _allocatedSize = 0;
}
ResourceManager::~ResourceManager() {
freeResources();
}
void ResourceManager::setHeapThreshold(int min, int max) {
assert(0 < max);
assert(min <= max);
_maxHeapThreshold = max;
_minHeapThreshold = min;
}
bool ResourceManager::validateResource(const char *str, int type, int idx) const {
if (type < rtFirst || type > rtLast || (uint) idx >= (uint)num[type]) {
error("%s Illegal Glob type %s (%d) num %d", str, resTypeFromId(type), type, idx);
return false;
}
return true;
}
void ResourceManager::nukeResource(int type, int idx) {
byte *ptr;
if (!address[type])
return;
assert(idx >= 0 && idx < num[type]);
ptr = address[type][idx];
if (ptr != NULL) {
debugC(DEBUG_RESOURCE, "nukeResource(%s,%d)", resTypeFromId(type), idx);
address[type][idx] = 0;
flags[type][idx] = 0;
status[type][idx] &= ~RS_MODIFIED;
_allocatedSize -= ((MemBlkHeader *)ptr)->size;
free(ptr);
}
}
const byte *ScummEngine::findResourceData(uint32 tag, const byte *ptr) {
if (_game.features & GF_OLD_BUNDLE)
error("findResourceData must not be used in GF_OLD_BUNDLE games");
else if (_game.features & GF_SMALL_HEADER)
ptr = findResourceSmall(tag, ptr);
else
ptr = findResource(tag, ptr);
if (ptr == NULL)
return NULL;
return ptr + _resourceHeaderSize;
}
int ScummEngine::getResourceDataSize(const byte *ptr) const {
if (ptr == NULL)
return 0;
if (_game.features & GF_OLD_BUNDLE)
return READ_LE_UINT16(ptr) - _resourceHeaderSize;
else if (_game.features & GF_SMALL_HEADER)
return READ_LE_UINT32(ptr) - _resourceHeaderSize;
else
return READ_BE_UINT32(ptr - 4) - _resourceHeaderSize;
}
void ResourceManager::lock(int type, int i) {
if (!validateResource("Locking", type, i))
return;
flags[type][i] |= RF_LOCK;
}
void ResourceManager::unlock(int type, int i) {
if (!validateResource("Unlocking", type, i))
return;
flags[type][i] &= ~RF_LOCK;
}
bool ResourceManager::isLocked(int type, int i) const {
if (!validateResource("isLocked", type, i))
return false;
return (flags[type][i] & RF_LOCK) != 0;
}
bool ScummEngine::isResourceInUse(int type, int i) const {
if (!_res->validateResource("isResourceInUse", type, i))
return false;
switch (type) {
case rtRoom:
return _roomResource == (byte)i;
case rtRoomImage:
return _roomResource == (byte)i;
case rtRoomScripts:
return _roomResource == (byte)i;
case rtScript:
return isScriptInUse(i);
case rtCostume:
return isCostumeInUse(i);
case rtSound:
return _sound->isSoundInUse(i);
case rtCharset:
return _charset->getCurID() == i;
case rtImage:
return _res->isModified(type, i) != 0;
case rtSpoolBuffer:
return _sound->isSoundRunning(10000 + i) != 0;
default:
return false;
}
}
void ResourceManager::setModified(int type, int i) {
if (!validateResource("Modified", type, i))
return;
status[type][i] |= RS_MODIFIED;
}
bool ResourceManager::isModified(int type, int i) const {
if (!validateResource("isModified", type, i))
return false;
return (status[type][i] & RS_MODIFIED) != 0;
}
void ResourceManager::expireResources(uint32 size) {
int i, j;
byte flag;
byte best_counter;
int best_type, best_res = 0;
uint32 oldAllocatedSize;
if (_expireCounter != 0xFF) {
_expireCounter = 0xFF;
increaseResourceCounter();
}
if (size + _allocatedSize < _maxHeapThreshold)
return;
oldAllocatedSize = _allocatedSize;
do {
best_type = 0;
best_counter = 2;
for (i = rtFirst; i <= rtLast; i++)
if (mode[i]) {
for (j = num[i]; --j >= 0;) {
flag = flags[i][j];
if (!(flag & RF_LOCK) && flag >= best_counter && address[i][j] && !_vm->isResourceInUse(i, j)) {
best_counter = flag;
best_type = i;
best_res = j;
}
}
}
if (!best_type)
break;
nukeResource(best_type, best_res);
} while (size + _allocatedSize > _minHeapThreshold);
increaseResourceCounter();
debugC(DEBUG_RESOURCE, "Expired resources, mem %d -> %d", oldAllocatedSize, _allocatedSize);
}
void ResourceManager::freeResources() {
int i, j;
for (i = rtFirst; i <= rtLast; i++) {
for (j = num[i]; --j >= 0;) {
if (isResourceLoaded(i, j))
nukeResource(i, j);
}
free(address[i]);
free(flags[i]);
free(status[i]);
free(roomno[i]);
free(roomoffs[i]);
free(globsize[i]);
}
}
void ScummEngine::loadPtrToResource(int type, int resindex, const byte *source) {
byte *alloced;
int i, len;
_res->nukeResource(type, resindex);
len = resStrLen(source) + 1;
if (len <= 0)
return;
alloced = _res->createResource(type, resindex, len);
if (!source) {
alloced[0] = fetchScriptByte();
for (i = 1; i < len; i++)
alloced[i] = *_scriptPointer++;
} else {
for (i = 0; i < len; i++)
alloced[i] = source[i];
}
}
bool ResourceManager::isResourceLoaded(int type, int idx) const {
if (!validateResource("isResourceLoaded", type, idx))
return false;
return address[type][idx] != NULL;
}
void ResourceManager::resourceStats() {
int i, j;
uint32 lockedSize = 0, lockedNum = 0;
byte flag;
for (i = rtFirst; i <= rtLast; i++)
for (j = num[i]; --j >= 0;) {
flag = flags[i][j];
if (flag & RF_LOCK && address[i][j]) {
lockedSize += ((MemBlkHeader *)address[i][j])->size;
lockedNum++;
}
}
debug(1, "Total allocated size=%d, locked=%d(%d)", _allocatedSize, lockedSize, lockedNum);
}
void ScummEngine_v5::readMAXS(int blockSize) {
debug(9, "ScummEngine_v5 readMAXS: MAXS has blocksize %d", blockSize);
_numVariables = _fileHandle->readUint16LE(); // 800
_fileHandle->readUint16LE(); // 16
_numBitVariables = _fileHandle->readUint16LE(); // 2048
_numLocalObjects = _fileHandle->readUint16LE(); // 200
_numArray = 50;
_numVerbs = 100;
// Used to be 50, which wasn't enough for MI2 and FOA. See bugs
// #933610, #936323 and #941275.
_numNewNames = 150;
_objectRoomTable = NULL;
_fileHandle->readUint16LE(); // 50
_numCharsets = _fileHandle->readUint16LE(); // 9
_fileHandle->readUint16LE(); // 100
_fileHandle->readUint16LE(); // 50
_numInventory = _fileHandle->readUint16LE(); // 80
_numGlobalScripts = 200;
_shadowPaletteSize = 256;
_numFlObject = 50;
if (_shadowPaletteSize)
_shadowPalette = (byte *)calloc(_shadowPaletteSize, 1);
}
#ifndef DISABLE_SCUMM_7_8
void ScummEngine_v8::readMAXS(int blockSize) {
debug(9, "ScummEngine_v8 readMAXS: MAXS has blocksize %d", blockSize);
_fileHandle->seek(50, SEEK_CUR); // Skip over SCUMM engine version
_fileHandle->seek(50, SEEK_CUR); // Skip over data file version
_numVariables = _fileHandle->readUint32LE(); // 1500
_numBitVariables = _fileHandle->readUint32LE(); // 2048
_fileHandle->readUint32LE(); // 40
_numScripts = _fileHandle->readUint32LE(); // 458
_numSounds = _fileHandle->readUint32LE(); // 789
_numCharsets = _fileHandle->readUint32LE(); // 1
_numCostumes = _fileHandle->readUint32LE(); // 446
_numRooms = _fileHandle->readUint32LE(); // 95
_fileHandle->readUint32LE(); // 80
_numGlobalObjects = _fileHandle->readUint32LE(); // 1401
_fileHandle->readUint32LE(); // 60
_numLocalObjects = _fileHandle->readUint32LE(); // 200
_numNewNames = _fileHandle->readUint32LE(); // 100
_numFlObject = _fileHandle->readUint32LE(); // 128
_numInventory = _fileHandle->readUint32LE(); // 80
_numArray = _fileHandle->readUint32LE(); // 200
_numVerbs = _fileHandle->readUint32LE(); // 50
_objectRoomTable = (byte *)calloc(_numGlobalObjects, 1);
_numGlobalScripts = 2000;
_shadowPaletteSize = NUM_SHADOW_PALETTE * 256;
_shadowPalette = (byte *)calloc(_shadowPaletteSize, 1);
}
void ScummEngine_v7::readMAXS(int blockSize) {
debug(9, "ScummEngine_v7 readMAXS: MAXS has blocksize %d", blockSize);
_fileHandle->seek(50, SEEK_CUR); // Skip over SCUMM engine version
_fileHandle->seek(50, SEEK_CUR); // Skip over data file version
_numVariables = _fileHandle->readUint16LE();
_numBitVariables = _fileHandle->readUint16LE();
_fileHandle->readUint16LE();
_numGlobalObjects = _fileHandle->readUint16LE();
_numLocalObjects = _fileHandle->readUint16LE();
_numNewNames = _fileHandle->readUint16LE();
_numVerbs = _fileHandle->readUint16LE();
_numFlObject = _fileHandle->readUint16LE();
_numInventory = _fileHandle->readUint16LE();
_numArray = _fileHandle->readUint16LE();
_numRooms = _fileHandle->readUint16LE();
_numScripts = _fileHandle->readUint16LE();
_numSounds = _fileHandle->readUint16LE();
_numCharsets = _fileHandle->readUint16LE();
_numCostumes = _fileHandle->readUint16LE();
_objectRoomTable = (byte *)calloc(_numGlobalObjects, 1);
if ((_game.id == GID_FT) && (_game.features & GF_DEMO) &&
(_game.platform == Common::kPlatformPC))
_numGlobalScripts = 300;
else
_numGlobalScripts = 2000;
_shadowPaletteSize = NUM_SHADOW_PALETTE * 256;
_shadowPalette = (byte *)calloc(_shadowPaletteSize, 1);
}
#endif
void ScummEngine_v6::readMAXS(int blockSize) {
if (blockSize == 38) {
debug(0, "ScummEngine_v6 readMAXS: MAXS has blocksize %d", blockSize);
_numVariables = _fileHandle->readUint16LE();
_fileHandle->readUint16LE();
_numBitVariables = _fileHandle->readUint16LE();
_numLocalObjects = _fileHandle->readUint16LE();
_numArray = _fileHandle->readUint16LE();
_fileHandle->readUint16LE();
_numVerbs = _fileHandle->readUint16LE();
_numFlObject = _fileHandle->readUint16LE();
_numInventory = _fileHandle->readUint16LE();
_numRooms = _fileHandle->readUint16LE();
_numScripts = _fileHandle->readUint16LE();
_numSounds = _fileHandle->readUint16LE();
_numCharsets = _fileHandle->readUint16LE();
_numCostumes = _fileHandle->readUint16LE();
_numGlobalObjects = _fileHandle->readUint16LE();
_numNewNames = 50;
_objectRoomTable = NULL;
_numGlobalScripts = 200;
if (_game.heversion >= 70) {
_objectRoomTable = (byte *)calloc(_numGlobalObjects, 1);
}
if (_game.heversion <= 70) {
_shadowPaletteSize = 256;
_shadowPalette = (byte *)calloc(_shadowPaletteSize, 1);
}
} else
error("readMAXS(%d) failed to read MAXS data", blockSize);
}
void ScummEngine::readGlobalObjects() {
int i;
int num = _fileHandle->readUint16LE();
assert(num == _numGlobalObjects);
assert(_objectStateTable);
assert(_objectOwnerTable);
_fileHandle->read(_objectOwnerTable, num);
for (i = 0; i < num; i++) {
_objectStateTable[i] = _objectOwnerTable[i] >> OF_STATE_SHL;
_objectOwnerTable[i] &= OF_OWNER_MASK;
}
_fileHandle->read(_classData, num * sizeof(uint32));
#if defined(SCUMM_BIG_ENDIAN)
// Correct the endianess if necessary
for (i = 0; i != num; i++)
_classData[i] = FROM_LE_32(_classData[i]);
#endif
}
#ifndef DISABLE_SCUMM_7_8
void ScummEngine_v8::readGlobalObjects() {
int i;
int num = _fileHandle->readUint32LE();
assert(num == _numGlobalObjects);
assert(_objectStateTable);
assert(_objectOwnerTable);
_objectIDMap = new ObjectNameId[num];
_objectIDMapSize = num;
for (i = 0; i < num; i++) {
// Add to object name-to-id map
_fileHandle->read(_objectIDMap[i].name, 40);
_objectIDMap[i].id = i;
_objectStateTable[i] = _fileHandle->readByte();
_objectRoomTable[i] = _fileHandle->readByte();
_classData[i] = _fileHandle->readUint32LE();
}
memset(_objectOwnerTable, 0xFF, num);
// Finally, sort the object name->ID map, so we can later use
// bsearch on it. For this we (ab)use strcmp, which works fine
// since the table entries start with a string.
qsort(_objectIDMap, _objectIDMapSize, sizeof(ObjectNameId),
(int (*)(const void*, const void*))strcmp);
}
void ScummEngine_v7::readGlobalObjects() {
int num = _fileHandle->readUint16LE();
assert(num == _numGlobalObjects);
assert(_objectStateTable);
assert(_objectOwnerTable);
_fileHandle->read(_objectStateTable, num);
_fileHandle->read(_objectRoomTable, num);
memset(_objectOwnerTable, 0xFF, num);
_fileHandle->read(_classData, num * sizeof(uint32));
#if defined(SCUMM_BIG_ENDIAN)
// Correct the endianess if necessary
for (int i = 0; i != num; i++)
_classData[i] = FROM_LE_32(_classData[i]);
#endif
}
#endif
void ScummEngine::allocateArrays() {
// Note: Buffers are now allocated in scummMain to allow for
// early GUI init.
_objectOwnerTable = (byte *)calloc(_numGlobalObjects, 1);
_objectStateTable = (byte *)calloc(_numGlobalObjects, 1);
_classData = (uint32 *)calloc(_numGlobalObjects, sizeof(uint32));
_newNames = (uint16 *)calloc(_numNewNames, sizeof(uint16));
_inventory = (uint16 *)calloc(_numInventory, sizeof(uint16));
_verbs = (VerbSlot *)calloc(_numVerbs, sizeof(VerbSlot));
_objs = (ObjectData *)calloc(_numLocalObjects, sizeof(ObjectData));
_roomVars = (int32 *)calloc(_numRoomVariables, sizeof(int32));
_scummVars = (int32 *)calloc(_numVariables, sizeof(int32));
_bitVars = (byte *)calloc(_numBitVariables >> 3, 1);
if (_game.heversion >= 60) {
_arraySlot = (byte *)calloc(_numArray, 1);
}
_res->allocResTypeData(rtCostume, (_game.features & GF_NEW_COSTUMES) ? MKID_BE('AKOS') : MKID_BE('COST'),
_numCostumes, "costume", 1);
_res->allocResTypeData(rtRoom, MKID_BE('ROOM'), _numRooms, "room", 1);
_res->allocResTypeData(rtRoomImage, MKID_BE('RMIM'), _numRooms, "room image", 1);
_res->allocResTypeData(rtRoomScripts, MKID_BE('RMSC'), _numRooms, "room script", 1);
_res->allocResTypeData(rtSound, MKID_BE('SOUN'), _numSounds, "sound", 2);
_res->allocResTypeData(rtScript, MKID_BE('SCRP'), _numScripts, "script", 1);
_res->allocResTypeData(rtCharset, MKID_BE('CHAR'), _numCharsets, "charset", 1);
_res->allocResTypeData(rtObjectName, 0, _numNewNames, "new name", 0);
_res->allocResTypeData(rtInventory, 0, _numInventory, "inventory", 0);
_res->allocResTypeData(rtTemp, 0, 10, "temp", 0);
_res->allocResTypeData(rtScaleTable, 0, 5, "scale table", 0);
_res->allocResTypeData(rtActorName, 0, _numActors, "actor name", 0);
_res->allocResTypeData(rtVerb, 0, _numVerbs, "verb", 0);
_res->allocResTypeData(rtString, 0, _numArray, "array", 0);
_res->allocResTypeData(rtFlObject, 0, _numFlObject, "flobject", 0);
_res->allocResTypeData(rtMatrix, 0, 10, "boxes", 0);
_res->allocResTypeData(rtImage, MKID_BE('AWIZ'), _numImages, "images", 1);
_res->allocResTypeData(rtTalkie, MKID_BE('TLKE'), _numTalkies, "talkie", 1);
if (_game.heversion >= 70) {
_res->allocResTypeData(rtSpoolBuffer, 0, 9, "spool buffer", 1);
_heV7RoomIntOffsets = (uint32 *)calloc(_numRooms, sizeof(uint32));
}
}
void ScummEngine::dumpResource(const char *tag, int idx, const byte *ptr, int length) {
char buf[256];
Common::File out;
uint32 size;
if (length >= 0)
size = length;
else if (_game.features & GF_OLD_BUNDLE)
size = READ_LE_UINT16(ptr);
else if (_game.features & GF_SMALL_HEADER)
size = READ_LE_UINT32(ptr);
else
size = READ_BE_UINT32(ptr + 4);
sprintf(buf, "dumps/%s%d.dmp", tag, idx);
out.open(buf, Common::File::kFileWriteMode);
if (out.isOpen() == false)
return;
out.write(ptr, size);
out.close();
}
ResourceIterator::ResourceIterator(const byte *searchin, bool smallHeader)
: _ptr(searchin), _smallHeader(smallHeader) {
assert(searchin);
if (_smallHeader) {
_size = READ_LE_UINT32(searchin);
_pos = 6;
_ptr = searchin + 6;
} else {
_size = READ_BE_UINT32(searchin + 4);
_pos = 8;
_ptr = searchin + 8;
}
}
const byte *ResourceIterator::findNext(uint32 tag) {
uint32 size = 0;
const byte *result = 0;
if (_smallHeader) {
uint16 smallTag = newTag2Old(tag);
do {
if (_pos >= _size)
return 0;
result = _ptr;
size = READ_LE_UINT32(result);
if ((int32)size <= 0)
return 0; // Avoid endless loop
_pos += size;
_ptr += size;
} while (READ_LE_UINT16(result + 4) != smallTag);
} else {
do {
if (_pos >= _size)
return 0;
result = _ptr;
size = READ_BE_UINT32(result + 4);
if ((int32)size <= 0)
return 0; // Avoid endless loop
_pos += size;
_ptr += size;
} while (READ_BE_UINT32(result) != tag);
}
return result;
}
const byte *ScummEngine::findResource(uint32 tag, const byte *searchin) {
uint32 curpos, totalsize, size;
debugC(DEBUG_RESOURCE, "findResource(%s, %lx)", tag2str(tag), searchin);
if (!searchin) {
if (_game.heversion >= 70) {
searchin = _resourceLastSearchBuf;
totalsize = _resourceLastSearchSize;
curpos = 0;
} else {
assert(searchin);
return NULL;
}
} else {
searchin += 4;
_resourceLastSearchSize = totalsize = READ_BE_UINT32(searchin);
curpos = 8;
searchin += 4;
}
while (curpos < totalsize) {
if (READ_BE_UINT32(searchin) == tag) {
_resourceLastSearchBuf = searchin;
return searchin;
}
size = READ_BE_UINT32(searchin + 4);
if ((int32)size <= 0) {
error("(%s) Not found in %d... illegal block len %d", tag2str(tag), 0, size);
return NULL;
}
curpos += size;
searchin += size;
}
return NULL;
}
const byte *findResourceSmall(uint32 tag, const byte *searchin) {
uint32 curpos, totalsize, size;
uint16 smallTag;
smallTag = newTag2Old(tag);
if (smallTag == 0)
return NULL;
assert(searchin);
totalsize = READ_LE_UINT32(searchin);
searchin += 6;
curpos = 6;
while (curpos < totalsize) {
size = READ_LE_UINT32(searchin);
if (READ_LE_UINT16(searchin + 4) == smallTag)
return searchin;
if ((int32)size <= 0) {
error("(%s) Not found in %d... illegal block len %d", tag2str(tag), 0, size);
return NULL;
}
curpos += size;
searchin += size;
}
return NULL;
}
uint16 newTag2Old(uint32 newTag) {
switch (newTag) {
case (MKID_BE('RMHD')):
return (0x4448); // HD
case (MKID_BE('IM00')):
return (0x4D42); // BM
case (MKID_BE('EXCD')):
return (0x5845); // EX
case (MKID_BE('ENCD')):
return (0x4E45); // EN
case (MKID_BE('SCAL')):
return (0x4153); // SA
case (MKID_BE('LSCR')):
return (0x534C); // LS
case (MKID_BE('OBCD')):
return (0x434F); // OC
case (MKID_BE('OBIM')):
return (0x494F); // OI
case (MKID_BE('SMAP')):
return (0x4D42); // BM
case (MKID_BE('CLUT')):
return (0x4150); // PA
case (MKID_BE('BOXD')):
return (0x5842); // BX
case (MKID_BE('CYCL')):
return (0x4343); // CC
case (MKID_BE('EPAL')):
return (0x5053); // SP
default:
return (0);
}
}
const char *resTypeFromId(int id) {
static char buf[100];
switch (id) {
case rtRoom:
return "Room";
case rtScript:
return "Script";
case rtCostume:
return "Costume";
case rtSound:
return "Sound";
case rtInventory:
return "Inventory";
case rtCharset:
return "Charset";
case rtString:
return "String";
case rtVerb:
return "Verb";
case rtActorName:
return "ActorName";
case rtBuffer:
return "Buffer";
case rtScaleTable:
return "ScaleTable";
case rtTemp:
return "Temp";
case rtFlObject:
return "FlObject";
case rtMatrix:
return "Matrix";
case rtBox:
return "Box";
case rtObjectName:
return "ObjectName";
case rtRoomScripts:
return "RoomScripts";
case rtRoomImage:
return "RoomImage";
case rtImage:
return "Image";
case rtTalkie:
return "Talkie";
case rtSpoolBuffer:
return "SpoolBuffer";
case rtNumTypes:
return "NumTypes";
default:
sprintf(buf, "%d", id);
return buf;
}
}
} // End of namespace Scumm
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